Directivity and VSWR Enhancement of Microstrip Patch Antenna at 2.45GHz Using Novel Inset Fed Microstrip Line Feed for Bluetooth Communications in Comparison with Coaxial Probe Feed


  • M. Sreenadh Reddy
  • R. Swaminathan



Aim: The main objective of this project is to design a rectangular-shaped microstrip patch antenna at a frequency of 2.45GHz to enhance the Directivity and VSWR using Inset fed technique in Bluetooth Communications. Materials & Methods: Microstrip patch antenna with microstrip line feed technique and Coaxial probe feed technique is used with a sample size of 40. Results: By using HFSS Simulation Software Gain, Directivity, VSWR and Return Loss of Microstrip patch antenna are improved and noted in comparison with Coaxial probe feed antenna. The Simulation Results obtained for the designed antenna are Gain is 2.91dB, Directivity is 6.04dB, Return loss for 2.45GHz, 3.7GHz and 4.5GHz frequencies are -17.1dB, -20.1dB, -17.2dB. VSWR for 2.45GHz, 3.7GHz, 4.5GHz frequencies are 1.3, 1.2, 1.3. Attained significance accuracy ratio p(<0.05) for Gain and Directivity and p(<0.04) for return loss and vswr in Statistical Analysis. Conclusion: Performance parameters of Microstrip Patch antenna with microstrip line feed technique appears to be improved when compared with Coaxial probe feed technique. From the results, the proposed antenna can be used for Bluetooth Communications and Tri-band applications.